Definition of thoroughbrace in English:

thoroughbrace

(also throughbrace)

noun

US
historical
  • 1Any of a number of strong leather straps supporting the body of a coach or similar vehicle.

  • 2A vehicle whose body is supported on thoroughbraces, especially a stagecoach.

Origin

Early 19th century. In some forms from thorough- + brace.

Pronunciation

thoroughbrace

/ˈθʌrəbreɪs/